<?php
class uploadImg {
	var $annexFolder = "../upload/";//附件存放点，默认为：annex
	var $smallFolder = "../upload/";//缩略图存放路径，注：必须是放在 $annexFolder下的子目录，默认为：smallimg
	var $markFolder = "../upload/";//水印图片存放处
	var $upFileType = "jpg gif png";//上传的类型，默认为：jpg gif png rar zip
	var $upFileMax = 1024;//上传大小限制，单位是“KB”，默认为：1024KB
	var $fontType;//字体
	var $maxWidth = 50000; //图片最大宽度
	var $maxHeight = 50000; //图片最大高度
	var $toFile = true;
	
	function uploadImg($upFileType='',$upFileMax='') {
		if($upFileType!="") $this->upFileType = $upFileType;
		if($upFileMax!="") $this->upFileMax = $upFileMax;
	}

	function upLoad($inputName,$annexFolder,$imageName="") {
		if($annexFolder!='') $this->annexFolder = $annexFolder;
		if($imageName==""){
			$imageName = time().rand("1000","9999");//设定当前时间为图片名称
		}
		
		if(@empty($_FILES[$inputName]["name"])) die($this->error("没有上传图片信息，请确认"));
		
		$name = explode(".",$_FILES[$inputName]["name"]);//将上传前的文件以“.”分开取得文件类型
		$imgCount = count($name);//获得截取的数量
		$imgType = $name[$imgCount-1];//取得文件的类型
		
		if(strpos($this->upFileType,$imgType) === false) die($this->error("上传文件类型仅支持 ".$this->upFileType." 不支持 ".$imgType));
		
		$photo = $imageName.".".$imgType;//写入数据库的文件名
		$uploadFile = $this->annexFolder.$photo;//上传后的文件名称
		$upFileok = move_uploaded_file($_FILES[$inputName]["tmp_name"],$uploadFile);
		
		if($upFileok) {
			$imgSize = $_FILES[$inputName]["size"];
			$imgWH = getimagesize($this->annexFolder.'/'.$photo);
			$imgWidth = $imgWH[0];
			$imgHeight = $imgWH[1];
			$kSize = round($imgSize/1024);

			if($kSize > ($this->upFileMax*1024)) {
				@unlink($uploadFile);
				die($this->error("上传文件超过 ".$this->upFileMax."KB"));
			}
			
			if($imgWidth > ($this->maxWidth)){
				@unlink($uploadFile);
				die($this->error("上传文件的宽度超过 ".$this->maxWidth."px"));
			}
			
			if($imgHeight > ($this->maxHeight)){
				@unlink($uploadFile);
				die($this->error("上传文件的高度超过 ".$this->maxHeight."px"));
			}
		} else {
			die($this->error("上传图片失败，请确认你的上传文件不超过 $this->upFileMax KB 或上传时间超时"));
		}
		return $photo;
	}
	
	function getInfo($photo) {
		$imageInfo = getimagesize($photo);
		$imgInfo["width"] = $imageInfo[0];
		$imgInfo["height"] = $imageInfo[1];
		$imgInfo["type"] = $imageInfo[2];
		$imgInfo["name"] = basename($photo);
		$name = explode(".",$photo);//将上传前的文件以“.”分开取得文件类型
		$imgCount = count($name);//获得截取的数量
		$imgInfo["extension"] = $name[$imgCount-1];//取得文件的类型
		return $imgInfo;
	}
	function smallImg($photo,$smallFolder,$suffix='',$width=128,$height=128,$limit=false) {
		if($smallFolder!='') $this->smallFolder = $smallFolder;
		$imgInfo = $this->getInfo($photo);
		$newName = substr($imgInfo["name"],0,strrpos($imgInfo["name"], ".")).$suffix.".".$imgInfo["extension"];//新图片名称
		
		if($imgInfo["type"] == 1) {
			$img = imagecreatefromgif($photo);
		} elseif($imgInfo["type"] == 2) {
			$img = imagecreatefromjpeg($photo);
		} elseif($imgInfo["type"] == 3) {
			$img = imagecreatefrompng($photo);
		} else {
			$img = "";
		}
	
		if(empty($img)) return False;
	
		if($limit==true){
			$width = ($width > $imgInfo["width"]) ? $imgInfo["width"] : $width;
			$height = ($height > $imgInfo["height"]) ? $imgInfo["height"] : $height;
			$srcW = $imgInfo["width"];
			$srcH = $imgInfo["height"];
			
			if ($srcW * $width > $srcH * $height) {
				$height = round($srcH * $width / $srcW);
			} else {
				$width = round($srcW * $height / $srcH);
			}
		}
		
		if (function_exists("imagecreatetruecolor")) {
			$newImg = imagecreatetruecolor($width, $height);
			ImageCopyResampled($newImg, $img, 0, 0, 0, 0, $width, $height, $imgInfo["width"], $imgInfo["height"]);
		} else {
			$newImg = imagecreate($width, $height);
			ImageCopyResized($newImg, $img, 0, 0, 0, 0, $width, $height, $imgInfo["width"], $imgInfo["height"]);
		}
	
		if ($this->toFile) {
			if (file_exists($this->smallFolder.$newName)) @unlink($this->smallFolder.$newName);
			ImageJPEG($newImg,$this->smallFolder.$newName);
			return $newName;
		} else {
			ImageJPEG($newImg);
		}
		
		ImageDestroy($newImg);
		ImageDestroy($img);
		return $newName;
	}

	function waterMark($photo,$text,$markFolder='',$fontType='') {
		if($markFolder!='') $this->markFolder = $markFolder;
		if($fontType!='') $this->fontType = $fontType;
		$imgInfo = $this->getInfo($photo);
		$newName = substr($imgInfo["name"], 0, strrpos($imgInfo["name"], ".")) . "_mark.jpg";
		
		switch ($imgInfo["type"]) {
			case 1:
			$img = imagecreatefromgif($photo);
			break;
			case 2:
			$img = imagecreatefromjpeg($photo);
			break;
			case 3:
			$img = imagecreatefrompng($photo);
			break;
			default:
			return False;
		}
		
		if (empty($img)) return False;
		
		$width = ($this->maxWidth > $imgInfo["width"]) ? $imgInfo["width"] : $this->maxWidth;
		$height = ($this->maxHeight > $imgInfo["height"]) ? $imgInfo["height"] : $this->maxHeight;
		$srcW = $imgInfo["width"];
		$srcH = $imgInfo["height"];
		
		if ($srcW * $width > $srcH * $height) {
			$height = round($srcH * $width / $srcW);
		} else {
			$width = round($srcW * $height / $srcH);
		}
		
		if (function_exists("imagecreatetruecolor")) {
			$newImg = imagecreatetruecolor($width, $height);
			ImageCopyResampled($newImg, $img, 0, 0, 0, 0, $width, $height, $imgInfo["width"], $imgInfo["height"]);
		} else {
			$newImg = imagecreate($width, $height);
			ImageCopyResized($newImg, $img, 0, 0, 0, 0, $width, $height, $imgInfo["width"], $imgInfo["height"]);
		}
		
		$white = imageColorAllocate($newImg, 255, 255, 255);
		$black = imageColorAllocate($newImg, 0, 0, 0);
		$alpha = imageColorAllocateAlpha($newImg, 230, 230, 230, 40);
		ImageFilledRectangle($newImg, 0, $height-26, $width, $height, $alpha);
		ImageFilledRectangle($newImg, 13, $height-20, 15, $height-7, $black);
		ImageTTFText($newImg, 4.9, 0, 20, $height-14, $black, $this->fontType, $text[0]);
		ImageTTFText($newImg, 4.9, 0, 20, $height-6, $black, $this->fontType, $text[1]);
		
		if($this->toFile) {
			if (file_exists($this->markFolder.$newName)) @unlink($this->markFolder.$newName);
			ImageJPEG($newImg,$this->markFolder.$newName);
			return $this->markFolder.$newName;
		} else {
			ImageJPEG($newImg);
		}
		ImageDestroy($newImg);
		ImageDestroy($img);
		return $newName;
	}

	function error($msg){
		echo "<script>
				alert('$msg');
				history.go(-1);
			</script>";
	}
}

/*创建目录*/
function make_dir($folder)
{
    $reval = false;

    if (!file_exists($folder))
    {
        /* 如果目录不存在则尝试创建该目录 */
        @umask(0);

        /* 将目录路径拆分成数组 */
        preg_match_all('/([^\/]*)\/?/i', $folder, $atmp);

        /* 如果第一个字符为/则当作物理路径处理 */
        $base = ($atmp[0][0] == '/') ? '/' : '';

        /* 遍历包含路径信息的数组 */
        foreach ($atmp[1] AS $val)
        {
            if ('' != $val)
            {
                $base .= $val;

                if ('..' == $val || '.' == $val)
                {
                    /* 如果目录为.或者..则直接补/继续下一个循环 */
                    $base .= '/';

                    continue;
                }
            }
            else
            {
                continue;
            }

            $base .= '/';

            if (!file_exists($base))
            {
                /* 尝试创建目录，如果创建失败则继续循环 */
                if (@mkdir(rtrim($base, '/'), 0777))
                {
                    @chmod($base, 0777);
                    $reval = true;
                }
            }
        }
    }
    else
    {
        /* 路径已经存在。返回该路径是不是一个目录 */
        $reval = is_dir($folder);
    }

    clearstatcache();

    return $reval;
}
?> 